Miriam's death wasn't treated as suspicious at the time, but her husband believes there may have been foul play.Image: NETWORK 10 / SUPPLIED

Transgender reality star Miriam Rivera was found dead in Mexico at aged 38 under suspicious circumstances.

Miriam Rivera, who rose to fame in the mid-2000s as a contestant on Big Brother, was found dead at her home in Hermosillo, Mexico, on February 5.

Miriam's husband, Daniel Cuervo, has maintained the star's death has been 'passed off' as suicide, telling The Daily Mail he suspects foul play was involved after the television personality allegedly refused to accept work as a prostitute.

Recalling the day before Miriam's passing, Mr Cuervo said: "On the morning of February 5, Miriam called me [in New York] from Mexico, telling me she was feeling sick and vomiting blood, so I told her to get to the hospital.